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Urea, molecular biology grade

- Synonyms: Carbamide, Carbonyldiamide
- CH4N2O
- M = 60,06 g/mol
- CAS [57-13-6]
- EINECS-No.: 200-315-5
- Solub. in water: (20 ºC): 590 g/l
- Melting point: 132,5 - 134,5 ºC
- Vapour pressure: (75 ºC) ~ 0,002 hPa
- LD 50 (oral, rat): 8471 mg/kg
- Tariff number: 3102 10 10 00
- Applications: laboratory reagent, in biochemistry, in fertilizer compositions, manufacturing of synthetic resins, in the plastics industry, for reversible denaturation of proteins.

SPECIFICATIONS
assay (DSC): min. 99,5 %
identity (IR-spectrum): passes test
appearance: passes test
appearance of solution: passes test
absorbance of an aqueous solution 8 M in a 1 cm cell at 260 nm: max. 0,1 AU
absorbance of an aqueous solution 8 M in a 1 cm cell at 280 nm: max. 0,1 AU
chlorides (Cl): max. 0,0005 %
cyanides (CN): max. 0,000001 %
sulfates (SO4): max. 0,001 %
ammonium (NH4): max. 0,00001 %
heavy metals (as Pb): max. 4 ppm
iron (Fe): max. 0,2 ppm
biuret: max. 0,05 %
residue on ignition (800 ºC): max. 0,01 %
DNases, RNases, Proteases : non detected